Blocked user can push into own repo

Created by: zzet

https://github.com/gitlabhq/gitlabhq/blob/master/app/models/ability.rb#L44-L46

• Create user test_user
• Login as test_user
• Add own key
• Create project test_project
• Logout
• Login as Admin
• Block user test_user ....

User test_user can push code and clone code after block :(